A person who meddles in the affairs of others(noun)
WordNet. Princeton University. 2010.
Use "nosey-parker" in a sentence
"Now, short of some nosey-parker peering in, I was safe."
"Even more significant and shameful, Kahn argued, were the 'so-called master race theories' of the pigmentocrats, who would expose every marriage to the hazard that some nosey-parker might reveal a skeleton in the ancestral cupboard."
""Well, I must say it's been a real change for me not having that nosey-parker of a fat boy sticking his nose into my business all the time he's home for the holidays, " said Mr. Goon."